Hello, I have a Asus M4A89GTD PRO/USB3 motherboard on my computer and I've recently installed a Cooler Master Hyper 212 Evo Direct Touch fan onto the computer. Unfortunately it is running at 100% all the time even when the computer isn't in need of cooling. Is there a way to change this so that the fan speed is variable? ASUS hasn't replied to my question and I'm not that computer savvy. The motherboard does have a 4 pin system and the fan is plugged into that.